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The AAPG/Datapages Combined Publications Database

Showing 5,919 Results. Searched 200,357 documents.

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Determination of Drag Coefficients in Measuring Particle Diameters

Weinan Chen

Journal of Sedimentary Research (SEPM)

.... The measured aerodynamic-equivalent diameters of spherical particles equal their geometric diameters with a shape factor of unity. The aerodynamic-equivalent...

2003

Phanerozoic Relative Motions of North Atlantic Arctic Lands

W. Brian Harland

CSPG Special Publications

... for Ancient Sea-floor spreading from Alpha Cordillera and Mendeleyev Ridge, in Arctic Geology; Amer. Assoc. Petrol. Geol., Mem. 19, p. 542-561...

1975

Abstract: Exploitation of the Radar Images Geometric Deformations to the Quantification of Dips and 3D Modeling

Emmanuel Pajot, Jean Paul Rudant, and Damien Dhont

Search and Discovery.com

...Abstract: Exploitation of the Radar Images Geometric Deformations to the Quantification of Dips and 3D Modeling Emmanuel Pajot, Jean Paul Rudant...

2008

The Use of Paleomagnetic Studies in Understanding the Complex Tertiary Tectonic History of East and Southeast Asia

R. McCabe, D. Merrill, J.T. Cole, E. Lumadyo

Circum Pacific Council Publications

... a rapid rate of opening of greater than 60 em/year; a rate much faster than any known spreading rate. This rigid block rotational model assumes...

1996

Thoughts and Speculations on Geodynamic Processes: Chapter 10

Peter A. Ziegler

AAPG Special Volumes

... hand, was associated with the opening of new oceanic basins, some of which are today no longer characterized by active spreading ridges. The main...

1988

Estimation of Arithmetic Permeability from a Semi-Log Porosity/Log10 Permeability Regression; #41583 (2015)

Gregory Benson

Search and Discovery.com

... completely random nor perfectly correlated, with reality being somewhere between these extremes. Theoretically, a geometric permeability average approximates...

2015

An Electronic Seismic Dip Plotter

J. A. Westphal

Oklahoma City Geological Society

...°. Geometric errors in alignment of the geophone spreads along a dip line usually negate any attempt to determine accurate dips much over 20°. The plotter...

1958

Heat flow and thermal conductivity measurements in the northeastern Pennsylvania Appalachian Basin depocenter

Chelsea Rauch, Kyle Barrie, Steven C. Collins, Matthew J. Hornbach, and Casey Brokaw

AAPG Bulletin

... using a standard geometric mean saturation correction (equations 2, 3) described by Blackwell and Spafford (1987) and Beardsmore and Cull (2001...

2018

An Analysis of a Seismic Reflection from the Base of a Gas Hydrate Zone, Offshore Peru (1)

JOHN J. MILLER , MYUNG W. LEE , and ROLAND VON HUENE

AAPG Bulletin

..., and was successful in collapsing the complex airgun signature into a clean spike. True-Amplitude Recovery A geometric spreading correction...

1991

Phase-Ray Maslov Summation: A Complete Finite-Frequency Ray Method

Tianfei Zhu

Search and Discovery.com

... is the source point. The geometric spreading function E in equation 4 is determined by >J (x) / J (x 0 )@1/ 2 , (5) where J(x) is the Jacobian...

Unknown

Phase-Ray Maslov Summation: A Complete Finite-Frequency Ray Method

Tianfei Zhu

Search and Discovery.com

... is the source point. The geometric spreading function E in equation 4 is determined by >J (x) / J (x 0 )@1/ 2 , (5) where J(x) is the Jacobian...

Unknown

Geologic Notes Thermal Model Confirmed

Jack G. Elam

West Texas Geological Society

... those ridges that are spreading the fastest. However, those studying these phenomena could not relate them to gravity measurements being obtained from...

1988

A Quantitative Model for Salt Deposition in Actively Spreading Basins; #30117 (2010)

Bernard Montaron and Paul Tapponnier

Search and Discovery.com

...A Quantitative Model for Salt Deposition in Actively Spreading Basins; #30117 (2010) Bernard Montaron and Paul Tapponnier Click to view presentation...

2010

Adjustments of Velocity Logs to Tie Geophone Surveys

Warren Hicks

Oklahoma City Geological Society

...Adjustments of Velocity Logs to Tie Geophone Surveys Warren Hicks 1961 135 138 Kokesh, F. P. and Blizard, R. B.: Geometric Factors in Sonic Logging...

1961

Abstract: Modelling Near-field Effects in VSP-based Q-estimation Part 1: Theoretical Developments; #90171 (2013)

Arnim B. Haase and Robert R. Stewart

Search and Discovery.com

... bandwidth, 2) poorly constrained multiple scattering, and 3) geometric spreading losses. By contrast, the popular spectral ratio method of Q-estimation...

2013

New Global Tectonics and "The New Geometry": DISCUSSION

Robert S. Dietz

AAPG Bulletin

..., no. 5305, p. 20-23. Le Pichon, X., and J. R. Heirtzler, 1968, Magnetic anomalies in the Indian Ocean and sea-floor spreading: Jour. Geophys. Research, v. 73...

1973

Performance of Lower-Porosity Nugget Reservoirs, Anschutz Ranch East, Bessie Bottom, and North Pineview Fields, Utah and Wyoming

William J. Sercombe

Rocky Mountain Association of Geologists

.... The geometric average of cck90y’ permeabilities measured on the Bessie Bottom core was 0,64 md, where kgOis the lesser of two whole-core permeability...

1989

Geochemistry and Petrology of Volcanic Rocks from the Woodlark Basin: Addressing Questions of Ridge Subduction

M. R. Perfit, C. H. Langmuir, M. Backisapa, B. Chappell, R. W. Johnson, H. Staudigel, S. R. Taylor

Circum Pacific Council Publications

... ABSTRACT The Woodlark Basin consists primarily of crust formed at the Woodlark spreading center over the last five million years. The basin...

1987

Analysis of Scale Exaggeration on Seismic Profiles (1)

DONALD S. STONE

AAPG Bulletin

... exaggeration factors, exaggerated dips, unexaggerated dips, and correction factors which are derived from the ratio of exaggerated orthogonal thicknesses...

1991

Size Analysis of Silt and Clay by Hydrophotometer: REPLY

Clifton F. Jordan, Jr.

Journal of Sedimentary Research (SEPM)

.... However, Mr. Tilly has pointed out that the values of mid-diameters in Table 1 on page 490 were presented as arithmetic means rather than as geometric...

1977

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